Cloth-roll clutch.



A. BURNS.

CLOTH ROLL CLUTCH. V APPLICATION FILED DEC-24.1914.

1 0,@79, Patented June 12, 1917. I

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2 5 27 Wilnesses. 2 Inventor. fl, M5 Alfred Burns.

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, an snares rarest ALFRED BURNS, OF EASTHAMPTON, MASSACHUSETTS, ASSIGNOR T0 WEST BOYLSTON MANUFACTURING COMPANY, OF EASTHAMPTON, MASSACHUSETTS, A. CORPORATION OF MASSACHUSETTS.

'cLo'rH-noLL (moron.

Specification of Letters Patent.

Patented June 12, 1917,.

Application filed December 24, 1914. Serial No. 878,857.

To all whom it may concern:

Be it'known that I, ALFRED BURNS, a citiment in Cloth-Roll Clutches, of which the follow ng description, in connection with the accompanying drawing, is a specifica- -tion, like characters on the drawing representing like parts.

This invention relates to cloth roll clutches for use principally in connection with power looms. 5

-,It is well known in this art that the cloth must be under uniform tension in passing from the take-up roll around the guide roll to the cloth roll. And, in winding the woven fabric on the cloth roll, the successive circumferential increments of cloth layers entail a progressively greater amount of cloth wound per revolution, with the resultant increase of tension on the cloth. To

meet this contingency it is customary to in-' terpose a friction means in the power transmission actuating the cloth roll. ThlS friction means provides a definite factor of- And, in the operation of the loom, when the adjustment is changed, as is necessary at present, in order to run oif the woven fabric from the cloth roll, exact re-adjustment is diflicult. A disparity causes, either too great a tension upon the fabric, or causes the fabric loosely to fit the take-up and en- "tails lack of uniformity of weave in the run of the loom. a

The object, therefore, of this improved construction is to retain the advantages of the adjustable friction member but to obviate the necessity for the repeated friction or slippage adjustments.

Another object is toprovide means by which the desired tension adjustment is re-- 'tained through successive windings and un windings of the cloth from the cloth roll and to facilitate and expedite the takin off of the woven fabric from the cloth rol A selected embodiment of this improved clutch has been illustrated in the accompanying'drawings and will now be described.

Figure 1 is a perspective view of a portion of a loom showing the invention applied thereto;

Fig. 2 is a view of the end of the cloth roll on which the clutch is mounted;

Fig. 3 is a section on the line 3-3, Fig. 2.

The loom frame 1 has secured thereto the breast beam 2 over which the woven cloth is pulled by the take-up or sand roll 4, then around the guide roll 3 to the cloth roll 5. The rod 6, secured to opposite sides of the loom frame, assures greater rigidity of the frame. The various rolls. and gears are journaled and bracketed to the frame in the customary manner.

The take-up motion illustrated is the usual ratchet-ring type. The ratchet gear 7 is actuated by the pitman 8 to the end of which is secured the dog 9 engaging the ratchet teeth. The casting 10, bolted to the loom frame, has a stud l1 thereon upon which the pawl 12 is pivotally fastened and functions to prevent retrograde movement of the ratchet. The motion of the ratchet is imparted to the sand roll gear 13 and to the cloth roll gear 14 by a suitable train of gears, not shown.

The cloth roll 5 is secured to, and is rotatable with, the shaft 25 upon which is loosely mounted the gear 14, having rigidly secured thereto and revoluble therewith a drum 15. The two-piece friction band 16, pivoted at 17, is clamped upon the drum 15 and its, tension thereon is regulated by meansf pf the bolt 18 and suitable check or look nuts 19.

The interlocking element, in this selected embodiment, is integral with the upper arm of the band 16. It comprises two lugs 20 and 21 which carry, pivotally mounted therebetween, the latch 22, operable by means of the handle 23. This latch is adapted positively to engage the toothed wheel 24 or to be swung upwardly, out of such engagement, into the position shown in dotted lines in Fig. 2. The wheel 24 has a drum 26 fixedly attached thereto and secured by means of the screws 27 to the reduced portion 28 of the cloth roll 5.

At present, in running off the cloth from the cloth roll, the tension of the friction means must be loosened or, as often is neto be limited to the constructional cessary, the friction element demounted. lit is obvious that the tension adjustment is lost; this operation being repeated with successive removals of the cloth from the filled cloth roll.

The operation of this improved construction is simple and highly eflicient. lhus, when the cloth roll is filled, the latch member 22 is raised by means of its handle 23 into the upright position shown in dotted roll wheel 24 and the roll is then freely rotatable with the shaft 25- whence the woven cloth may be quickly and easily unreeled. l hedoom cloth end may then be secured to the cloth roll, the latch 22 depressed into locked position-an, engagement with the wheel 24- and the run continued. It is ap parent that, during the unreeling, the ad: justment of the friction band 16 upon the drum of the power gear is unchanged and the same tension is assured for the continuation of the run-insuring uniformity of weave and the saving of time otherwise necessitated for its approximately accurate adjustment.

While 1 have illustrated herein a selected embodiment of my invention 1 do not Wish features shown.

Having fully described my invention, what I claim as new and desire to secure by Letters Patent is:

l. A clutch comprising a driven member, a driving element, means mounted upon said driving element in frictional engagement therewith and revolubly actuated thereby, and coupling means movably mounted upon said frictional means, said means being mov able to connect said frictional means and carried by said driving element, -means mounted upon said drum in frictional engagement therewith and revolubly actuated thereby, and couplin means carried by said frlctlonal means, sa'l coupling means bemg movable to engage the driven member whereby the latter may be differentially actuated and oluble.

3.. A clutch, comprising 'a driven member, a driving element, a drum carried by said element, a clamping member on sai'd fdrum adaptable to rotate therewith," means car: ried by said clamping member for vadjusting the tension of said member whereby, when. resistance to rotation of said driven menu when disengagedis freely revreao ve her passes a predetermined point, said clamping member automatically slips on said drum and the driven member is diflerentially driven by said driving element, a toothed wheel secured to and revoluble with said driven element, means carried by said clamping member adapted to engage and actuate said toothed wheel or to be disengaged therefrom, whereby said driven member may be freely revoluble without adjustlines HLF 1g. 2. The latch, in this unlocked pos1t1on, is out of engagement with the cloth inent of said clamping member tension.

4:. A clutch, comprising a driven member, a power driving element adapted to'actuate said driven member, a friction member on said element whereby, when resistance to rotation of said driven member passes a predetermined point, said driven member may be differentially driven, a toothed wheel affixed to said driven member, means carried by said friction member adapted pivotally to engage and actuate said toothed wheel, and means manually operable tin-disengage said pivoted engaging means, whereby said driven member may be freely revoluble.

5. A. clutch, comprising a shaft, a driven member mounted on and revoluble with said shaft, a driven gear loosely mounted on said shaft, a drum on said driven gear, a pivoted friction band clamped upon and normally rotatable with said drum, means on said frictionband for adjusting its tension on said drum whereby, when the resistance against rotation of the driven member passes a predetermined point, said band may automatically slip on said drum and said 'driven member may be positively and differentially driven, a toothed wheel affixed to said drlven member and revoluble therewith, a pivoted latch carried by the friction band and normally in engagement with said toothed wheel whereby said driven member .is actuated but adapted to be moved out of engagement with said toothed wheel to permit free rotation ofsaid drivenmember.

6. A clutch, comprising a driving element, a driven member, a toothed wheel thereon, an adjustable friction band carried by the drivin element, lugs on said band, a latch pivotally mounted on said lugs and adapted to engage said toothed wheel when in operative position, and adapted to be raised into inoperative position to perrnit the driven member to be freely rota-ted In testimony whereof, I have signed my name to this specification, in the presence of two subscribing witnesses ALFRED BURNS,

Witnesses J. Stunner, EVA l'lown. 

